groundnut

(noun) a North American vine with fragrant blossoms and edible tubers; important food crop of Native Americans. Synonyms: groundnut vine, Indian potato, potato bean, wild bean, Apios americana, Apios tuberosa.

(noun) nutlike tuber; important food of Native Americans. Synonyms: potato bean, wild bean.

(noun) pod of the peanut vine containing usually 2 nuts or seeds; `groundnut' and `monkey nut' are British terms. Synonyms: peanut, earthnut, goober, goober pea, monkey nut.